It's a bit of guesswork depending on your circumstances, but as others have said, a level 2 or 3 should be fine.
I bought stock of all sorts of products back in March just as lockdown was kicking in and I was expecting a surgery date for April/May. I figured I'd better get them in just in case there were supply issues as a result of the pandemic.
Amusingly enough though, the pandemic gave me an extra 2 months to work on those pelvic floor muscles. (Although it was funny to see the leaflet say "See if you can hold it for 5 seconds. I was like. OK. How about a minute? 😀Not for ten reps though 😜Who's got time for that? I mostly did 10 second reps. Sets of 10, aiming for 10 times a day. With one or two "long holds". Also the 'situp' version for extra load.)
The hospital gave me about 3 or 4 pads any and I took a few of each with me to the TWOC appointment. Successful TWOC last Friday. Used a single #2 pad all day. Hardly anything in it. Saturday used a #1 pad. Same result. Sunday decided to go "commando" - no pad. 😀It was fine.
Still not needing a pad, which is great. Do feel the occasional 'drip' internally, but you can stop it from coming out with the pelvic floor muscles. That happens about once a day when either tired, focussed on something else or having a fart etc.
I'd probably wear a pad if I went on a long car journey or somewhere I'm "not in control of my circumstances". Will be interesting to see the effect of strenuous exercise in a couple of weeks when I'm allowed. But in the interim period, I'm still doing the pelvic floor exercises. I've found that doing the fast reps is best straight after a wee. Then you've got nothing there to come out when you release quickly.
One thing I learnt on day 1 was that if you release the muscles too quickly when doing the exercise, it can open you up and you lose a bit of urine.